Since Performancing will close their Metrics service pretty soon (or make it open-source, although I doubt that), and since Google is not ready yet with their MeasureMap service (I emailed them about a beta test account, or an aproximate release date, and they didn’t had any info for me, except “it’s coming”), the Feedburner stats will be your best choice.
Some image previews:
And beeing integrated with all the stats of your RSS feeds, it’s pretty cool. All your needs in once place. Good job FeedBurner.
PS: Did you guys knew that now you can select the Romanian language too, for your RSS page at FeedBurner ? Courtesy of …. me.
Later Edit: I never knew this, but apparently FeedBurner has a VERY big forum.